Red supergiant stars 'dance' because they have too much gas

The stars have unusually bubbly guts that cause their surfaces to wobble, thus changing the amount of light they give off,

The dancing stars are known as red supergiants, enormous stellar objects that have swelled up and cooled down

 These stars are about eight times more massive than the sun and can have a diameter up to 700 times that of the sun

these slowly dying behemoths can be extremely challenging to locate with precision

Astronomers can typically determine the near-exact location of a star by identifying its photo-center,

That motion makes it hard to pinpoint the stars' barycenters, which provide stars' exact cosmic addresses

, researchers compared the dancing red supergiants to smaller main sequence stars

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